CVE-2018-14821 json
Rockwell Automation RSLinx Classic Versions 4.00.01 and prior.
published 2018-09-20 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-6705
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 4.5%
- EPSS 4.5% chance of exploitation in 30 days, percentile 91%
- public exploits
- 0
- none known
Summary
Rockwell Automation RSLinx Classic Versions 4.00.01 and prior. This vulnerability may allow a remote, unauthenticated threat actor to intentionally send a malformed CIP packet to Port 44818, causing the RSLinx Classic application to terminate. The user will need to manually restart the software to regain functionality.
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-18-263-02 updated cvss 7.5
Rockwell Automation RSLinx Classic
-
Rockwell Automation RSLinx Classic <= 4.00.01affected: mitigation “Rockwell Automation has released a new version of the software that can found at Rockwell Automation knowledgebase article KB 1075712” rockwellautomation.custhelp.com
From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf
Exploit prediction
4.50% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- tenable.com https://www.tenable.com/security/research/tra-2018-26 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Affected products
- Rockwell Automation RSLinx Classic
Classification
References
-
tenable.com
/security/research/tra-2018-26
exploit, third-party-advisory
-
ics-cert.us-cert.gov
/advisories/ICSA-18-263-02
third-party-advisory, us-government-resource
Sources
- CVE List CVE-2018-14821
- NVD CVE-2018-14821
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